Torch.



P. F. WILLIS.

TORCH.

APPLICATION FILED FEB. 27, 1913.

Patented Aug. 19, 1913 i .41. He.

PRICE F. WILLIS, G15

ST. LflUIS, MISSQURI.

Specification of Letters Eatcnt.

Patented Aiig, 19, 32 3113.

Application filed February 27, 191.3. Serial No. 751,07.

To all whom it may concern:

lie it known that I, Pinon F. lVILLIs, a citizen of the United States, and a resident of the city of St. Louis and State of Missouri, have invented a. new and useful Iniprovement. in Torches, of which the following is a specification.

This ii'ivention relates to torches for heating metals in the welding, cutting and other treatment thereof, and more particularly to torches Whose flame is produced by a. mixture of oxygen and acetylene gas.

The invention has for its principal ohjccts to secure and maintain a proper mixture oi the gases; to avoid premature-mixing and leakage; to minimize the number or separable and interchangeable parts and yet permit of considerable adjustment in a single apparatus to suit dillerent conditions and character of work; and to attain certain advantages which will hereinafter more fully appear. v

The invention consists in the parts and in the arrangements and combinations or" parts iereinafter described and claimed.

In the accompanying drawing whic forms part of this specification and wherein like symbols refer to like parts Wherever they cccur,-Figure l is an elevation of a torch illustrating an embodiment of the inventiiin Fig. 2 is a longitudinal section through the torch on an enlarged Fig. 3 is a fragmentary new, partly in elevation and partly in section, of the supply pipes constituting the detachable andinterchange able handle extension member of the torch; Fig. 4 is a-section of the burner head detached; 5 is a longitudinal section through a modification of the burner tip; and Fig. is an inner end View or" the burner tip shown in Fig.

. The torch comprises a burner head 1 consisting of an integral casting or body of metal. This body is provided with a round chamber 2 adapted toreceive the supply the acetylene gas and another cha. .iber 3 arranged to receive the supply of oxygen. A screw-threaded bore 4, to which the screw-threaded shank 5 of a. hnrner tip *3 is fitted, extends from the end of the burner head to the acetylene chamber 2; While the oxygen chamber 3 extends to the opposite end of the burner head and is normally closed by screw-plug 7.

A relatively small axlal bore or .be etiectcd by the mere inter drill hole 8 connects the oxygen chamber 3 with the acetylene chamber 2; and the tip 6 is pro vided with an axial bore extending throughout the length thereof in line with said bore 8. Surrounding the bore 8 and inojecting into the acetylene chainher 2 is a boss 10 adjacent to which the inner end of the shank o of the tip terminates. The gap between said boss 10 and end of the shank 5 is determined by the relative length of said shank 5, the tip being provided with annular shoulder 11 adapted to he nought tight against the end of the burner head and the face of said shoulder and end of said burner head being ground true so as 'to insure an absolutely tight joint. By the above arrangement, the bore 8 through which communication is established between said chambers E2 and any lie-made of maximum size to suit a. maximum bore 9 in one of a series of the burner tips 6 which are relatively proportioned for flame suitable for different conditions or kinds of Work, the bores of said interchangeable tips being. graduated from said maximum. down to certain miniinum, While the shank portions 5 of the burner tips may he made in different lengths, so that th l'ietween. the innor end of the shank and boss 10 will to proportionately crianged with the application of the respective tips. In this Way; the desired changes in the s ze of the may change of the tips without necessitating a change in the pressures of the constituent gases.

Theinner end of the shank may be perfectly Eat in some cases, but it is preferably dished or concaved slightly, as at 12, so as to secure a proper mixture of the oxygen and acetylene So too, in some cases, the end of the shank n be provided with grooves 12 intersecting th here 9,-and these grooves may made of dfierent cross areas for the respective interchangeable tips, in

which case the shanks may all he of the some length and the variations in the grooves 12 alone depended upon i lating the proportion of the ecetyn 5 For practical purposes, the boss it should be approximately of the some (lien as the cooperating end of the shank 5 of he burner tip, and, in any ease not larger the diameter of the opening l, but ably a little less, as shown in Figs. 2 and This facilitates the application of a tool for lit? finishing the face of the boss and also secures uniformity in the annular slit between the edges of the boss and shank.

The burner head is provided with a cou pling portion 13 which may project at an angle to the axis of the burner tip or in a line parallel therewith, as desirable. As shown in the drawing, it extends at an inclination. This angle may be varied to suit di'llerent kinds of Work. This coupling portion is provided with a tapered socket l4, and extending axially with the soclcet is a duct 15 which communicates with the chamber 3, while a second duct 16 communicates with said chamber 2 and opens at its outer end also into said socket 1a.

A handle member comprising a tube within a tube is provided at its ends with like heads 17 having portions 18 tapered to cor respond to the taper of the socket 14. The outer tube 19 is secured at its ends in circular recesses 20 in said head, while the inner tube 21 has its ends 22 fitted tight in axial bores in said heads. The tapered portions 18 of the heads are provided with annular grooves 23, and opening into these grooves are a series of ducts 2% which communicate at their inner ends with the outer tube 19. The handle member has coupling nuts 25 s wiveled thereon, said nuts being adaptedto engage external screw threadson the coupling portion 13 of the burner head and also a coupling extension 26 at the end of. a second tubular handle member 27, said coupling extension 26 being provided with a tapered socket similar to the socket 14- in the coupling portion 13 of the burner head.

In the handle member 27 is a tube 28 which communicates at one end axially with the socket in said coupling extension 26. The opposite end of this tube 28 communicates with a coupling nipple 29 having a valved extension 30 adapted for connection with the usual flexible oxygen supply pipe. Surrounding the tube 28 is another tube 31 which communicates at one end with the tapered seat in the coupling extension 26 through a series of ducts 32. The opposite end of this tube 31 communicates with a valved coupling nipple 33 which is adapted tor connection with the usual flexible acety lene supply pipe.

The outer tube or shell of the handle inember 27 constitutes the grasping portionof the handle, and the head from which the coupling extension 26 projects, is preferably provided with a series of perforations :34 for ventilation.

By the arrangement of the tapered coupling heads 17 and the correspondingly tapered sockets in the coupling extensions 13 and 26, it is obvious that the head at either end may be attached to either of said coupling extensions; and the annular grooves 28 in said heads provide conluiuous passageways which communicate with the respective ducts 16 and 32 in whatever position the burner head or handle member 27 may be. Hence, the burner head may be readily swung around to different positions on the handle by merely loosening the nut 25 and then tightening said nut after the adjustment has been effected, without disturbing the connection with the coupling extension 26 on said handle member 27. This adjustment is advantageous in certain classes of work where the torch has to be turned about the axis of the handle while the ham dle is firmly grasped in thehand of the operator, which turning of the handle twists the flexible supply pipes and causes an undue strain which soon tires the operator and interferes with the manipulation of the torch. By this arrangement, also, a number of interchangeable handle pipe sections may be provided in difierent lengths, thus obviating thenecessity for providing separate entire torches of different lengths.

Furthermore, owing to the integral structure of the burner head and the arrangement of the tip, an accurate mixture of the gases is secured and maintained and the changes for the different conditions and character of work are readily accomplished.

Obviously, the device admits of considerable modification Without departing from the invention. Therefore I do not wish to be limited to the exact construction and an rangement shown.

a What I claim is:

1. A torch comprising a burner head having intake ducts for separate gases, and a coupling portion through which said intake ductsextend; and a handle having separate supply ducts for the respective gases, said handle having a coupling portion through which said supply ducts extend; the coupling portion or said burner head and the coupling portion of said handle being ar ranged and adapted for relative rotation and being also relatively arranged and adapted so that the respective intake ducts and corresponding supply ducts are in sep arate communication in any relative rotative position of said coupling portions; and releasable means engaging said burner; head and said handle for coupling them in adjusted position. y

2. A torch comprising a burner head having intake ducts for separate gases, and a coupling portion through which said intake ducts extend; a handle member having sup ply ducts for the respective gases, said handie member having a coupling portion like the coupling portion of said burner head; and a handle extension member having ducts therethrough for the respective gases, said handle extension member having like coupling portions at its ends through which said'ducts extend; the coupling portions of possess "relative rotation of said burner head and said handle members; and releasable means for securing said burner head and handle members in relatively adjusted position.

3. A torch comprising a burner head having mixing provisions for a combustible gas and oxygemand separate intake ducts for said combustible gas and oxygen communicating with said mixing provisions, said burner head having a coupling portion through which said ducts extend and being provided with a tapered socket, one of said ducts communicating axially with said socket and the'other through the side there of, and a detachable handle comprising separate supply pipes for the combustible gas and oxygen, a coupling head to which the ends of said pipes are attached, said coupling head having a tapered portion which isa counterpart of the socket in said coupling portion of the burner head, vsaid coupling head having provisions for maintaining separate communication between the respective supply pipes and the intake ducts in said burner head While permitting relative rotation of said burnerhead and said handle, and means for detachably connecting said coupling head to said'coupling portion of theburner head. r

4. A torch comprising a-burner head having mixing provisions tors combustible gas and oxygen, and separate intake'ductsfor said combustible gas and oxygen communicating with said mixing provisions, said burner head having a coupling portion through which said ducts extend and being provided with a tapered socket, one of said ducts communicating axially with said socket and the other through the side thereof, and a detachable handle comprising separate supply pipes for the combustible gas and oxygen, said'pipes being arranged the one Within the other, a coupling head to which the ends ofsaid pipes are attached, said coupling head having a tapered por tion which is a counterpart of the socket in.

said coupling portion of the burnerhead, theinner pipe of said handle opening axially through said coupling head, and saidcoupling head having an annular groove in its taoered portion and ducts therethrough coninmnicating with said-annular grove and the outer pipe of the handle, and means for detachably connecting said coupling head to said'coupling portion of the burnerhead.

5. A torch comprising a burner head hav 'ing-mixing provisions for a combustible gas said combustible gas and oxygen communi- With said mixing provisions, said burner head having a coupling portion ,through which said ducts extend and being 4 provided with a tapered socket, one of said ducts opening axially into said socket and the other through the side thereof, a handle Q'member comprising a grasping portion having a coupling extension provided with a socketidentical With the socket in the coupling portion ot said burner head, and two ;supply pipes arranged the one Within the other and attached at one end to said handle coupling extension, the inner pipe coin- .i'nunicating axially With the socket in said handle cou lin extension and said coupling extension having ducts communicating -With the outer-pipe and the side of said 1' socket, and a detachable handle extension comp risipg a pipe within a pipe, and duplicate heads to which the ends or said handle extension pipes are connected, said heads grieving tapered portions which are counterparts of the before-mentioned sockets, the

inner pipe opening axially, through at its opposite ends through the respective heads,

and said heads having annular grooves in their tapered portions and ducts therethrough communicating with said annular grooves and the ends of said outer pipe, and

means for detachably connecting said heads to the coupling portion of said burner head and to the coupling extension of said firstmentioned handle member.

6. A torch comprising a burner head, said burner head having mixing provisions for a combustible gas and oxygen, and separate intake ducts for said combustible gas and oxygen communicating with said mixing provisions, said burner head having a. coupling portion through which said ducts extend, a handle member comprising a grasp ing portion having separate supply pipes therein for the combustible gas and oxygen, said handle n iember having a coupling portion to which said pipes are connected, said coupling portion having ducts communicating with said pipes, a handle extension coniprising separate pipes for the combustible gas and said pipes being connected at each end to a single coupling member, said coupling members being adapted for attachment either to said coupling portion of the burner head or said coupling portion oiisaid ,ntio: d handle member, said coupling members having provisions for establishing communication between the pipes attached thereto and the respective ducts in said coupling portions of the burner head ad in Sdlu scrcw-threaded bore,said tip having an axial bore extending the entire length thereof, the shoulder of said tip cooperating with the end oi the burner, head to make a gas-Lightjoint, the end of said shank portion. terminating adjacent to the wall of said chamber to provide a restricted mixing space having a continuous restricted annular slit in communication with said chamber, and said burner head having a bore in line with the bore in said tip and comniunicaiing with said oxygen ply duct and said restricteo mixing h comprising a burner head havsnnplv ducts for a combustible L )n respectively, said burner h ad inning a =threaded bore in its end and a circn aichamber commui'ucating with said scrow-threaded bore and said coinhusiiblc gas supply duct, the Wall of said sir-- cuiar chainliier having a circular projection in line with said screw-threaded bore, a tip havin a. SClQ'W-llil'i2l(l(l shank portion fitted to said bore, said tip having an annular shoulder adapted to make a gas-tight joint with the end of the burner head, and the end of the shank portioi'rlerininating adj scentto said projc tion the wall the chaineer to provide a iestricted mixing; space having a cmrtinnous rertricted annular slit in com- IUlll'ilCZttliJil with d chamber, said tip having an axial ore therethrough, i lnirner head bore in line or "31/ bore in aid tip ant. con'inni.nicat-ing var"- said oxygen supply duct and said restricted mixing space.

9. I; to ch. comprising an integral. burner head he mg separate supply nets for a combnse le and ox gen respectively, said bu head ha a screw-threaded bore in as end and a circular chamber coin.-

niunicaling with said sa'eW-threaded bore and the combustible supply duct, a tip having a screw-threaded shank portion fitted to said screw-threaded bore, said tip having an annular slimilder adapted to make a gastight joint with the end of the burner head, and the end of the shank portion cooperating with the jnxlaposed Wall of said circular chamber to provide a restricted mixing space having a continuous restricted annular slit in communication with said chamber, said tip having an axial bore therethrough, and the burner head having a bore in line with the bore in said tip and communicating with said oxygen supply duct and said restricted mixing space.

10. A torch comprising an integral burner head having separate supply ductsfor a combustible and oxygen respectively, said burner head having a screw thrcaded bore in its end and a circular chamber communicating with said screw-threaded bore and the supply duct for the combustible gas,

the wall of said chamber having a circular projection in line with said screw-threaded bore and approximately of the same diam star, a tip having a screw-threaded shank portion fitted to said screW-threadedbore, said tip having an annular shoulder adapted to make a gas-tight joint- With the end of the burner head, and the end of said shank portion. being of substantially the same diameter as said circular projection on the Wall of said chamber and cooperating therewith but without engagement so as to provide a restricted mixing space having a continuous ricted annular slit coi'nmunicating with said chamber, said tip having an axial bore therethrough, and said burner lie-ac having a bore in line with the bore in said tip and communicating with said oxygen supply duct and said restricted mixing chamber.

Signed at St. Louis, Missouri, this 21st day of February, 1913.

PRIOR F. \VILLIS.

Witnesses l}. A. Pnnnixc'ron, A. Snnrzros 

